13857908 has 12 divisors (see below), whose sum is σ = 24357060. Its totient is φ = 6898752.

The previous prime is 13857901. The next prime is 13857947. The reversal of 13857908 is 80975831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3020644 + 10837264 = 1738^2 + 3292^2 .

It is a super-2 number, since 2×13857908² = 384083228272928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503 + ... + 8366.

It is an arithmetic number, because the mean of its divisors is an integer number (2029755).

Almost surely, 2^13857908 is an apocalyptic number.

It is an amenable number.

13857908 is a deficient number, since it is larger than the sum of its proper divisors (10499152).

13857908 is a wasteful number, since it uses less digits than its factorization.

13857908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15106 (or 15104 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 13857908 is about 3722.6211195876. The cubic root of 13857908 is about 240.1960666327.

The spelling of 13857908 in words is "thirteen million, eight hundred fifty-seven thousand, nine hundred eight".